CVE-2026-119618
highConcurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE.
Vendor / product: Apache — http server
Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.
CVSS
8.1
8.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-11-11 15:17
Modified: 2026-11-13 18:44
NVD status: Analyzed
Last synced 10 hours ago
Verified against the source API 2026-11-13 19:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
apache / http_server ≥2.4.55 <2.4.71
icing / mod_http2 ≥2.0.8 <2.0.42
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://httpd.apache.org/security/vulnerabilities_24.html
Patch / mitigation: https://httpd.apache.org/security/vulnerabilities_24.html
Patch / mitigation: https://github.com/microsoft/azurelinux/pull/20165
Patch / mitigation: https://www.wiz.io/blog/cve-2026-119618-rce-apache-http-server-vulnerability
References
- https://httpd.apache.org/security/vulnerabilities_24.html security@apache.org
- http://www.openwall.com/lists/oss-security/2026/11/11/13 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/security/cve/cve-2026-119618 af854a3a-2127-422b-91ae-364da2661108
- https://bugs.gentoo.org/986161 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/AlmaLinux/updates/issues/4252 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/microsoft/azurelinux/pull/20165 af854a3a-2127-422b-91ae-364da2661108
- https://ubuntu.com/security/CVE-2026-119618 af854a3a-2127-422b-91ae-364da2661108
- https://www.wiz.io/blog/cve-2026-119618-rce-apache-http-server-vulnerability af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-13 19:07 UTC · record ↗